Sash-lock.



C. P. HATHAWAY.

SASH LOCK.

.APPLICATIONIYFILED MAY 13, 1913.

Patented Sept. 7 1915.

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c1? fiamm Wane/mu y 4? se C. P. HATHAWAY.

SASH LOCK.

APPLICATION FILED MAY13. I913.

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PatentedS 7 1915.

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ammo 0 CPf/aZ/mm marl er CLAUDE P. HATHAWAY, OF'COFFEYVILLE, KANSAS,ASSIGNOB OF ONE-HALF TO JOHN FFTQ 7 SASI-I-LOCK.

Specification of Letters Patent.

Patented Sept. 7, 1915.

' Application filed May 13, 1913. Serial No. 767,345.

T 0 aZZ whom it may concern 1 Be it known that I, CLAUDE P. HATHAWAY, acitizen of the United States, residing at Cofleyville, inthe county ofMontgomery and State of Kansas, have invented certain new and usefulImprovements in Sash- Locks; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to new and useful improvements in window sashlocks, and as its principal object contemplates the provision of a sashlock which will permit the window sashes to be raised or lowered to anydesired position, and willhold them in adjusted position.

A, further object is to construct the sash lock in such manner thatwhile the lock may be readily controlled from the interior of the houseor building, it will be impossible for any person on the exterior totamper with the lock in an endeavor to raise the sashes for entrance.

The above and additional objects are accomplished by such means as areillustrated in the accompanying drawings, described in the followingspecification and then more particularly pointed out in the claim whichis appended hereto and forms a part of this application.

lVith reference to the drawings, wherein I have illustrated thepreferred embodiment of my invention as it is reduced to practice,

and throughout the several views of which similar reference numeralsdesignate corresponding parts: Figure l is a front elevationillustrating a portion of the window sashes with the sash lock of thisinvention in assembled position. Fig. 2 is a section on the line 22 ofFig. 1. Fig. 3 is a section on the line 3-8 of Fig. 2. Fig. 4 is adetail view of the perforated locking plate carried on the windowsashes. Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is asection on the line 66 of Fig. 1. Fig. 7 is a section on the line 77 ofFig. 6.

Proceeding now to the description of the drawings, the numerals 1 and 2designate respectively the upper and lower window sashes, while thenumeral 3 designates the sash wall of the window casing, designated asan entirety in Fig. 2 by the numeral 4. The member 3 of each side of thewindow casing is cut away immediately above and below the center line ofthe window to receive the upper and lower sash locks of this lnvention.The sash locks provided for the upper and lower window sashes arepractically identical in structure, differing only in this respect, thatthe lock for the upper sash is slightly longer than the lock for thelower sash, as illustrated in Fig. 3. The purpose of this difference indimensions will be obvious by reference to Fig. 3, and inasmuch as thestructures are practically identical only the lower sash lock will bedescribed in detail. This sash lock, designated as an entirety in Fig. 8by the numeral 5, includes an elongated substantially rectangularhousing 6. The longitudinal wall 7 of the housing is immovable and maybe held in fixed position by screws or other suitable fastening devices8, adapted to be screw threaded in the tubes 9. Internally of thehousing 6 and at the opposite ends thereof are ar-- ranged plunger tubes10 and 11, respectively disposed at the inner and outer ends of thehousing. Then the housing 6 is in operative position in the member 3,the tube 10 extends laterally with respect to the vertical frame member2 of the window sash, and is approximately alined with the center linethereof, being disposed so as to permit a locking pin 12, slidablymounted in the tube 10, to be inserted through the perforations 13 of alocking plate 14:, which is secured to theadjacent longitudinal edge ofthe sash3.

Asa means for normally holding the pin 12 in locking engagement with theplate 14: and for controlling the withdrawal of the pin to permit thewindow sash to be raised and lowered, this invention employs a pair ofpivotally mounted lever arms 15 and 16 and a leaf spring 17. The leafspring 17 is secured at one terminal to a side wall of the housing 6 bybolts or screws, as at 18, and is arcua-te in shape, being of suchlength that it extends approximately the entire length of the housing.The lever 15 is centrally pivoted on a pivot pin 19, journaled in theopposite side walls of the housing, and is disposed to permit thereduced terminal to operate through a slot formed in the tube 11 and toextend into a lateral bore 21 formed in a push pin 22. The lever 16 ispivoted on a pin 23 journaled in the opposite side walls of the housingand is arranged with its inner terminal 24 in engagement the windowsashes.

otal point 23 and the free end 26 of the lever, thus normally holdingthe locking pin 12 in extended position with its terminal in engagementwith the perforation 13 of the plate 14, as illustrated in Fig. 2. Byreference to Fig. 2, it will be observed that the member 3 is providedwith a recess 28 alined with the tube 10 to permit the pin 15 to befully withdrawn from engagement with the plate 14:.

The actual construction of the lock being thus disclosed, it now remainsto describe the operation of the several parts during the manipulationof the lock to raise and lower It will be observed that by pushing thepin 22 inwardly, the lever 15 will swing on its pivot 15, bringing theterminal 25 nearer the walls 7 of the housing 6, and consequentlyswinging the lever 16 on its pivot 23, forcing the free end 26 away fromthe wall 7 of the housing 6, against the tension of the spring 17. Thepin 12 is thus withdrawn from engagement with the notches of the plate14, and the window may be raised or lowered in the desired adjustedposition. As soon as the pin 22 is released, the spring 17 will forcethe terminal 26 of the lever 16 toward the walls 7 of the housing 6,thus returning the pin 12 to a position of locking engagement with theplate 14.

In reduction to practice, I have found that the form of my invention,illustrated in the drawings and referred to in the above description, asthe preferred embodiment, is the most efficient and practical; yetrealizing that the conditions concurrent with the said locking pin, aleaf spring rigidly secured at one of its ends to the wall of saidhousing, its free end extending toward the opposite end of said housingand being curved downwardly, a lever pivoted at its intermediate portionin said housing adjacent the locking pin, one end of said lever engagingthe locking pin, its free end inclining upwardly, a second lever pivotedat its intermediate portion at the opposite end of said housing, one ofits ends extending downwardly and engaging the inner end of a slidablepush pin, said pin mounted in said housing, the free end of said secondlever extending upwardly and its end engaging the spring, the upwardlyextending end of the first mentioned lever engaging the second mentionedlever adjacent its end, said spring engaging the first mentioned leverbetween its pivotal point and its end providing means for holding saidlocking pin in an operative or inoperative position.

In testimony whereof I aifix my signature in presence of two witnesses.I

CLAUDE P. HATI-IAWAY.

Witnesses:

EMBREE W. MORGAN, J. Gr. ROBINSON.

Copies of this patentmay be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

